Multiple-ply-paper-board-making machine.



R. M. SCANLAN. MULTIPLE PLY PAPER BOARD MAKING MACHINE.

APPLIOATION FILED Nov. 7, 1910.

Patented July 4, 1911 2 SHEETS-SHEET 1.

R. M. SGANLAN.

MULTIPLE PLY PAPER BOARD MAKING MACHINE.

APPLIOATION FILED NOV. '1, 1910.

997,01 1 I Patented July 4, 1911.

2 SHEETS-SHEET 2.

lillll'lll'( IAA/'TAEESESJI JNI/ENTDR. E

A A. @22AM @y ROBERT M. SCANLAN, OF TOLEDO,

OHIO, ASSIGNOR 0F ONE-HALF T0 JOHN B. SHEPLER, 0F TOLEDO, OHIO.

MULTIPLEPLY-PAPER-BCARD-MAKING MACHINE.

I Specification of Letters Patent.

Patented July 4, 1911.

Application filed November 7, 19'10. serial No. 591,064.

To all 'whom it may concern:

Be it known that I, ROBERT M. SCANLAN, a citizen of the United States, and a resident of rloledo, in the county of Lucas and State of Ohio, have invented a certain new and useful Multiple*PlyPaper-BoardMaking Machine; and I do hereby declare the folf lowing to be a full, clear, and exact description of the invention, such as will enable others 4skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to paper making machines, and particularly to machines of the class adapted for the making of multipleply board or the like The lobject of my invention is theprovision of a simple and efficient machine of this class, which is adapted for the manufacture of multiple-ply paper or board in continu ous flat sheet form, the plies of the paper or board being successively applied to a carrying belt as it moves along.

Further objects `of my invention will be apparent by reference to the following specication.

The invention is fully described in the following specification, and while, in its broader aspect it 'is capable of embodiment in numerous forms, a preferred embodiment thereof is illustratedin the 'accompanying drawings, in which,-

Figure 1 is a vertical longitudinal section of a machine embodying my invention. Fig. 2 is an enlarged longitudinal sectional view of the pulp applying mechanism of the inachine. Fig. 3 is an enlarged plan view of one end portion of such mechanism with parts broken away, and F ig'. 4 is a front elevation of such mechanism with apor'tion of the pulp carrying apron broken away.

Referring to the drawings, 1 designates the frame of a machine in which are mounted a plurality of sets of rolls 2 which in the present instance are adapted to serve both as compression rolls for the endless aprons '3, 3, which pass therebetween, and as means for extracting liquid from such aprons and the pul sheet disposed therebetween, as hereina ter described. Coperating with the sets of rolls 2 to guide the course of movements of .each apron 3Yis a set of idler rolls 4, one at least of which is adjustable by means of a screw 5 to facilitate a tightening of the associated apron.

Mounted in convenientposition beneath a portion -of each apron 3 preferably tothe rearlof the point of entrance of the aprons between the compressing rolls 2 is a tank 6 which has its interior provided longitudi* nally thereof with a series of chambers or compartments 7, the tops 8 of which are disposed beneath the upper edge of the tank' and inclined upwardly longitudinally of the tank in the direct-ion of movement of the associated portion of the respective aprons 3. The tops of these chambers are each provided intermediate their upper and lower edges with a series of openings or perfora- ,through said perforations.

A circulation of liquid is created from the tank through the perforations 9 and chambers 7 by a pump l0, one of which is provided for each tank 6 and communicates with the chambers 7 thereof through a pipe 11 which taps into each of such chambers in a suitable manner. The outlet pipes 12 of the pumps 10 connect with. pipesl3 leading from associated pulp vats 14, and each pipe 13 has its discharge end provided with a plurality of branches l5 one of which leads toand has its discharge into a trough 416 disposed transversely of the associated tank 6 over each chamber 7 therein, as indicated.

An endless belt or apron 17 of perforate material, such for instance as wire screening, is guided for movement longitudinally around each tank 6 by suitably positioned idler rolls 18 which are so disposed over the upper portion of the tank as to cause the belt to travel down into the tank within the liquid therein to the rear of each chamber 7 and thence upwardly on an incline over the top 8 of each chamber 7 in close parallelism therewith as indicated. The belt 17 passes beneath each of the discharge troughs 16 so that the matter discharged therefrom iiows upon the top of the belt over the top 8 of each chamber 7 The upper or. forward end 'of each inclined portion of a belt 17 is dis,-

posed above the top of the tank 6 by different ones of the guide rolls 18, and the associated apron 3, which passes over the tank 6, is held in contact with the guide rolls 18 at the top of the tank by pressure rolls 19, one of which is disposed over each guide roll 18 which is disposed at the upperends of the pulp receiving portions of the associated pulp applying belt 17. It is apparent that the plural Contact of the belt 17 with. the apron 3 and the successive passage down into the tank of the portions of the belt tothe rear of such points of contact causes pulp layers to be successively applied to the apron 3 by the belt 17 so thatthe belt after passing y over the tank 6 has a number of pulp layers belt 17.

attached thereto corresponding to the number of inclined pulp applying portions of the 'As the two tanks 6 of the machine and the associated pulp applying parts are the same except that the inclined portions of the belts 17 are reversely inclined, due to the reverse driving of the two belts, only oneof such pulp applying mechanisms will be described.

It will also be notedthat the upper apron 3 of the machine after passing over the forward end ofthe associated tank 6 extends downwardly'to its pointof entrance between the sets'of rolls 2, whereas` the lower apron 3 after passing over the associated tank 6 passes around one of the guide rolls 4 which also serves the function of a pressure roll 19 above described, and thence continues for,-

ward to its point of entrance between the sets of rolls 2.

The entrance .of the two aprons 3, 3 between the pressure rolls 2 after passing over the respective pulp applying units of the vmachine causes the pulp layers which adhere to their contiguous sides to be closely .pressed together and to pass from the forward end of such set of rolls in continuous single sheet form.

' The belts 3, 3 are shown as being driven by I a motor 2O which is connected by a belt 21 -to a pulley on the shaft with one of the forward rolls 2 of the machine. The belts 17 are driven by reason of their frictional contact with the apron 3 at their pointof contact therewith, as is apparent. The lower ones of the rolls 2 are shown as having their peripheries provided with perforations for the passage of liquidA therethrough.` Beneath eachset of rolls 2 is a trough or pan 22 for catching the liquid flowing. from the lower rolls 2 and these pans are connected to the drainage pipe 23 by means of which the liquid is carried to a-suitable point of discharge. i

In the, operation of my machine the operator starts the motor 2 0 which effects a belts 17; 17 being driven due to their frictional cb, tact with the respectiveaprons. 3.

mingles with the pulp flowing through said' discharge pipes from the vats 14. The pulp and liquid then discharge together from the branch pipes 1 5 into the distributing troughs 16 of the respective t-anks v6 and flow over a side of such troughs upon the subjacen't inclined portions of the belts 17. As the portions of the belts 17 upon which the pulp and liquid flow pass over the perfora 'tions 9 in the tops 8 of the chambers 7 which are disposed within the tanks 6, a circulation of liquid through such perforations causes an even distribution of the pulp over the perforated surfaces of the belts 17 As the belts 17 continue their endless travel each inclined portion thereof which has previl ously received its layer of pulp moves over the ,associated guide roll 18 at the top of the tank and into contact with the under surface of the associated apron 3, or in contact with the layer of pulp applied to the apron by the preceding inclined portion of the belt,

-layers from the contacting portions of the belts17 and causes suchlayers to be carried with the aprons 3 in adherence thereto. The continued movements of the aprons 3 after passing over the pulp applying units of the machine cause the pulp layers carried thereby to enter therewith betweenthe pressure and liquid extracting rolls 2 by which the pulp thus carried is pressed intol a continuous fiat sheet of heavy paper, binders board or the like. While.each pulp applying unit of the machine is adapted for theaiiixing of three pulp layers in successive order to the aprons 3 so that when the layers carried bv the two aprons when pressed together will form a six-ply board, it is apparent that the any number of pulp layers or p les to the aprons without departing from the spirit of the present invention.

I wish it understood that my invention is not limited to any specific construction or arrangement of the parts except in so far as such limitations are specified 1n the claims;

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is, driving of the aprons 3,3, the lpulp applylng .1. In a machine of the class described, the

"combination of a movable endless apron,

means guiding the course of movement of such'apron, and a pulp applying belt having a plurality of points of contact with saidapron, and means for applying matter in layer form to said apron to the rear of at least a portion ot the points of contact of the belt with the apron.

2. I n a. machine of the class described, the combination of a movable endless apron, means guiding the course of movement of said apron, a tank, a pulp applying belt associated with said tank and having successive portions guided for movement into the tank and then into contact with the apron for successively receiving and applying pulp layers to the apron as the apron and belt are moved, means for applying matter in layer form to the portions ot' the belt extending within the tank, and means for driving said apron.

3. In a machine of the class described, the combination of a movable endless apron, means guiding the course of movement ot' such apron, and mechanism having a single pulp applying belt for successively applying matter in layer-form to said apron.

4. In a machine of the class described, the combination of a movable endless apron, means guiding the movement of such apron, and mechanism having an endless pert'orate belt for successively applying layers of matter to said apron to form a multiple-ply paper board thereon.

5. In a machine of the class described, the combination of a movable endless apron, means guiding the course of movement of said apron, means for creating a pressure on said apron and cooperating with said irst means to guide the apron, a liquid receptacle, a pert'orate belt guided for successive movements down into said receptacle and thence into position to have contact with said apron, means guiding the course of movement of said belt, and-means for -discharging matter in layer form upon said belt to the rear of its points of contact with the apron whereby such layers are transferred from the belt to the apron at the points of contact thereof.

6. In a machine of the class described, the combination with a movable pulp layer carrying medium, of a mechanism for applying successive layers of pulp to said medium, said mechanism having an endless pulp applying beltwhich has a plurality of points of Contact with said mediu1n,.and means for supplying said belt with pulp layers to the rear of its points ot' contact with said medium. l

7. In a machine of the class described, the combination With a movable endless apron, of a tank, an endless perforate belt associated with said tank and having successive portions guided for movements down into said tank and then into contact With said apron, meansl for discharging matter upon the portions of said belt extending down into the tank, and means cooperating with said pulp discharging means for creating a circulation of liquid through the portions of the belt upon which the matter is discharged.

S. In a machine of the class described, the combination with a movable endless apron ot a tank having a plurality of chambers arranged in successive order longitudinally thereof, said chambers having pert'ora'te tops, an endless perforate belt associated with said tank, means guiding said belt to move over the tops of said chambers in close proximity thereto and to have conta-ct with the apron after its passage over eachchamber, means for discharging matter in layer form upon said belt over each chamber, and means cooperating with said matter discharging means for creating a circulation of liquid through the tank, said chambers and the perforated tops thereof.

9. In a machine of the class described, the combination with a movable endless apron, of a tank having a plurality of circulating chambers therein, said chambers having perforate inclined tops, an endless pertorate belt associated with said tank, means guiding said belt to move over the tops ofy said chambers in close proximity thereto and to have contact with the apron after its passage over each chamber, mea-ns for dischargingmatter in layer form upon said belt 1n its passage over each chamber, and means cooperating with said matter discharging means for creating a circulation of liquid through the tank and chamber.

10. Ina machine of the class described, the combination with a movable endless apron, of a tank having a plurality of inclined surfaces disposed therein and arranged in successive order, an endless perforate belt, means guiding said belt for movement varound the tank and causing it to successively dip into the tank and thence to pass over said inclined surfaces and to have contact With the apron, and means for discharging matter in layer form upon said belt over each of said inclined surfaces.

1l. In a machine ot the class described, the combination with two movable endless aprons, of means guiding the movements of said aprons and pressing portions of the two aprons together, and a pulp applying mechanism associated with each apron and having an endless beltl `which has successive Contact with therespective apron to apply pulp in layer form thereto prior to the point ofentrance of the aprons between said compressing means.

12. In a machine of the class described, the combination of a set of pressure rolls, a pair of endless aprons havingcoacting portions passing between said compressing rolls, means cooperating with said rolls in guiding the movements of said aprons, a

liquid tank associated with each apron, means associated with such tank'for successively applying matter in layer form to the apron, and means for discharging matter Within the tank upon said applying means, the matter applied to each apron passing 4With the aprons between said pressure rolls and being united into a single lsheet thereby.

13. In a machine of the class described, the combination of a plurality' of pressure rolls, aprons passing betweenl such rolls,

- means assisting said rolls in guiding the movements of said aprons, `a liquid tank associated with each apron, an endless perforate belt guided for movement around said tank and to successively dip into the tank and. have contact with the apron to apply a plurality of pulp layers to the apron one over another, means for applying pulp to the belt to the rearof each point of contact thereof with the associated apron, the

l matter applied tofy the aprons being adapted to pass betweenl the pressure rolls with the aprons and to be united into a single sheet thereby.

14. In a machine of the class described, the combination of a pair of movable endless aprons, a liquid tank associated with each apron, and having a plurality of chambers arranged in successive order therein, said chambers -having perforate inclined tops, an

endless perforate belt associated with each tank, means guiding the movements of each belt and causing it to dip a plurality of times intoits tank and-after each ldip into` the tank to pass over. the top of the chamber therein and have contact with the associated apron, means for applying pulp in layer form to the belt to the rear of each point of ,contact thereof with the apron, means for creating a circulation through the tank and chambers, means coperating with the guide pulp applying unit comprising a tank,-an

endless perforate belt guided for movement through said tank and having a plurality of points of contact with said apron during its passage through the tank, and means for,

applying a liquid pulp to the belt Within the tank, said pulp being transferred 1n layer form to the apron by said belt.

In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing Witnesses.

ROBERT M. SCANLAN. y Witnesses y C. W. OWEN, 7 M. G. GASKELL. 

